GeForce 830M vs GeForce GTX 460

Intro

Compare all that to the GeForce GTX 460, which uses a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM runs at a frequency of 900 MHz on this specific model. It features 336 SPUs as well as 56 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 460		150 Watts
	Difference: 125 Watts (500%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 should be 500% faster than the GeForce 830M in general, due to its higher bandwidth. (explain)

GeForce GTX 460		86400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 72000 (500%)

Texel Rate

The GeForce GTX 460 is quite a bit (more or less 130%) better at anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 21336 (130%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 is a better choice, by far. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 7968 (97%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.